{
  "manageEntity": {
    "action": "Save",
    "entityId": "1113306",
    "entityType": "Track",
    "nonce": "0xb48816aedcf180f54d882e9b6e0cfc01e7c1078829456195412170534534238d",
    "signature": "0x2627063d1d7ec9ec4ae3a2beebb71f06f1efe29b561027a067535c9de1c606cb049e97083ff7eac4f263850b4d80275fa6c14620fdb01bf137378018905173021b",
    "signer": "0x84B42609E987DD0953e02498E61987fB833B7C92",
    "userId": "887547386"
  }
}