{
  "manageEntity": {
    "action": "Save",
    "entityId": "786070714",
    "entityType": "Track",
    "nonce": "0x0b455712f9f66ea0286ead58dbf682355329b39f198342d060f7cfe0f8494e46",
    "signature": "0x95ed24929dc0a6d041280460a250b15352851885365220973d0c0217590b087753c3a36b1ce93c4625d8a84645158ad63a7cd80a3cc528970a0cdf5dc040378d1c",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}