{
  "manageEntity": {
    "action": "Save",
    "entityId": "86277668",
    "entityType": "Track",
    "nonce": "0x16d3c6f7f2677ef106b696ac94462215aecf0b89a87761731d522d9e955372ea",
    "signature": "0x77502b96336add78b9b2a524d05936db85cb933ca5ae6a28b6224fae9cfd30d761fea82a39769d3b02230e06d0a87614c52ab9d3f82889a94d20bb644d0004981b",
    "signer": "0x59765b22C96E88dA578af23E8611d6ca2dcCd7C9",
    "userId": "377610060"
  }
}