{
  "manageEntity": {
    "action": "Update",
    "entityId": "751098129",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x7b408f20a3aa231460361db652034ea8f759862b2eef7e1d3892a3fdb3c1b197",
    "signature": "0xbb41ed10a25baf44a159dac445578b36ac56df4b356c920d76bf875e2ffc0bc06d7a0a0c0cc06f6f400e2cb854e9c985fbe455e7b08b3b9c3f68d87ea529cab61c",
    "signer": "0x2a2d58bC87E4762394539A31b2F1830a3cb6E5f6",
    "userId": "751098129"
  }
}