{
  "manageEntity": {
    "action": "Save",
    "entityId": "1113606",
    "entityType": "Track",
    "nonce": "0x06f5810aea14e19be2efe10abf87928c58744b480a4468216b0a2e7042281b0b",
    "signature": "0x0e359def7d57da16dee29e3d2fcf2e126858f151fc36b454ede4e0811b3d341105be029be4d6d05b2e0491757f5690fe7a13dbaf99c4c4e7039c7dcf3046b4201c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}