{
  "manageEntity": {
    "action": "Save",
    "entityId": "1171021155",
    "entityType": "Track",
    "nonce": "0x406b52998b5822d946828a81c60dab06a829cd50488e590ba5f3cc7c75e76c3f",
    "signature": "0xd7e1a3cbeb3c010c0776334d8878895f93dfad595d27c16198e4460d6df2f7611be9335dc2dd94286a25716d678d52c66fd418cb3f7fc8c07b10e445b3bfae111b",
    "signer": "0x1CE93c43F8574f553E8071e946654066188B61BC",
    "userId": "20"
  }
}