{
  "manageEntity": {
    "action": "Save",
    "entityId": "1481356603",
    "entityType": "Track",
    "nonce": "0xcc0fa04cd88961bb5b789e83da27b32340cf8df3e7eb29df93204820afd3059b",
    "signature": "0x0425f5a5a580ee1d15b491e2decac77cb72d654ea0ef5850411a6b253c28b8f041289bb098a2f80fcba66b1737dbb3ff838a925fbb64a7eee006b22e0577dfcf1b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}