{
  "manageEntity": {
    "action": "Update",
    "entityId": "40456963",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xbb1863bf9fa688451591e3767afeabacd97637ab1e2af2b57b00af6359bc91e7",
    "signature": "0xcc8dfad9b3701e3aec2709f76bf04aea74b4de1675e0b1dc20b93344393658632f2f4d6469b3a6f7f5a1aa94396c3f2961a7672067db86552709da9ec7b15d4d1c",
    "signer": "0xc03B0DC91D4dd69BB843F957bAe8D3B7aA1317EB",
    "userId": "40456963"
  }
}