{
  "manageEntity": {
    "action": "Save",
    "entityId": "58716",
    "entityType": "Track",
    "nonce": "0xa72cebdf1d7e29d29587159640c1c546b956034ef5d27ad501f6f91239ed673a",
    "signature": "0x2f07205997cd7a3620453ee7b681bff02a53ec55d40e5953c183d19cedb51d455ebb2b9f2d86c61a9c210bc8a4276a1e6a0044029be3ee364340128fb111c8541c",
    "signer": "0x7451Cf52e883bc4483b88591c194dc3942E7F191",
    "userId": "584186978"
  }
}