{
  "manageEntity": {
    "action": "Update",
    "entityId": "972588517",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x66a1092b73bd5bcce7a225d06843b0adf657f74e11ffe28172ba8644530e99d0",
    "signature": "0xcc8151126f65cfd9a609ff98defa0c1c40747a5f78375927b0de21ae63f8639141dc59d509bf069947748be3814fab9578c053405db616eb8f6a617670dbca4e1c",
    "signer": "0x2A9118985Cf006EBdcEabcF713D90958E4Cd738E",
    "userId": "972588517"
  }
}