{
  "manageEntity": {
    "action": "Update",
    "entityId": "721987098",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x68d2a954b3db2c22950a0b6081fa2254b38d5387d63da43c365f2e6970d65af2",
    "signature": "0xe67d43b779d0c08ef07c4b7be2c1150c12809015acd22353c3d6919ed1adf2357a9202e883ca6d7f251408f160ce0f4c8f05b8a6bca233cf09a3653924b92a171c",
    "signer": "0x4c2B6D597D288449d9F215489E66f1cCe1c85B8F",
    "userId": "721987098"
  }
}