{
  "manageEntity": {
    "action": "Save",
    "entityId": "952286",
    "entityType": "Track",
    "nonce": "0xf97cbef69c89032e11abcf342c4e04cc9767d213c10d0844ec82d7499e2e9915",
    "signature": "0x9fef1d2a4494e03b0cf083f2d71123fab0e01a6c7046a5b0a2f047676db74d691a46e1d83a29dc1e8cd1a00e41df2a6699b0afec0300ff96b04738f9eba023a61b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}