{
  "manageEntity": {
    "action": "Update",
    "entityId": "972403996",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x5b0b4058006d6e5ae7d72ed19ed898c59d51d458f3341cdeb1155f0938d03453",
    "signature": "0x0099a10d5841e3fbe0edd32c0ae28c0f9aae250b77a17925f732dcf24150658f57f5795b39a2138040947d822d0efe165dfe9a13c6caea5b298661db2dd47cd31b",
    "signer": "0x6E3a2Eced379857dee1D751990a017493Bf4a316",
    "userId": "972403996"
  }
}