{
  "manageEntity": {
    "action": "Update",
    "entityId": "950478625",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x376e6460e039edf10711f194415e7f13a784358327bb2a63995ffe4487525536",
    "signature": "0xd93f6a852eeaba81e5902d399e517f28b1dcaf70e40b4055304737d38304f92273f2bc92aa20a0b641d10ce8b95e8783e0e7e6026716a1546579cad24ef9ade81c",
    "signer": "0x8fb06be829c5718Bb968af1525d910B795617ac0",
    "userId": "950478625"
  }
}