{
  "manageEntity": {
    "action": "Update",
    "entityId": "40456963",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x40ca251cb12f6521215e971bc44bef09498802e1a7bd28b1f325251de1f148a7",
    "signature": "0xb3425731a089ac83c0976b9158c101e3e1416775648004f41cd478a6d3243a343a9f5dda86843b247be6d7f94dfa658e233b2a88c24531cc37cb5bc48c7cc8261c",
    "signer": "0xc03B0DC91D4dd69BB843F957bAe8D3B7aA1317EB",
    "userId": "40456963"
  }
}