{
  "manageEntity": {
    "action": "Save",
    "entityId": "979146097",
    "entityType": "Track",
    "nonce": "0x9ade26b483ca68d9dd157c5a7d58101c3f7fb556508e703415cd0828895e6fc5",
    "signature": "0x511c11a907d2c0c0d162486265779e6e1fda823c09900f0604e9908b715cfd11096986a157312ebb9cb60fda56d7840e6e8396c8bccd9858ab2d001e7c8334631c",
    "signer": "0x2B171214e998033E806F72301307B2160CD94DdB",
    "userId": "489165782"
  }
}