{
  "manageEntity": {
    "action": "Save",
    "entityId": "1064011665",
    "entityType": "Track",
    "nonce": "0xa651e0ce447cec40be03b8e4e155c78275cdb4ddc88a61659f6ce0ce2acc499a",
    "signature": "0x6da2f6a7e1839707b514400616da9c1cb6b1314fd3b66fd6b49b53a7e0ef51eb353f3c51724b57725da4c51a7b8304c2aaa1425179928dfa4176617299537f8e1c",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}