{
  "manageEntity": {
    "action": "Save",
    "entityId": "1310792195",
    "entityType": "Track",
    "nonce": "0xb9ef95a37c3aa29be9e9acd776dd0da4b1d08abbde2cf4e0d51ce50cd9f9b555",
    "signature": "0x80e3e770b8ab777cdbb816503a9c73110dfd0d31bc1b453790cbe02899f6f9c9118601240fd986d9182ed14a1ec51a31eb21d9a69e29e254099bb82d53afabd31b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}