{
  "manageEntity": {
    "action": "Save",
    "entityId": "2062778188",
    "entityType": "Track",
    "nonce": "0xd2dbb0fee0350db5f67e23f1c8fde6f03359dacb1f66613ee0fb9513f03a8f75",
    "signature": "0x19b10ddf693a0bd05ec0f47850a7a5b1421b056a7f080a104a50d42b78b561aa42ec8953e385e60445f1b1813449a3e2ac73e39f25882e2debc6b8eae290b74c1b",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}