{
  "manageEntity": {
    "action": "Save",
    "entityId": "2130152988",
    "entityType": "Track",
    "nonce": "0xc3e502f4f46c3f5aebed2f9bab9bc336ff26e83da63dfcf8329d22d640230022",
    "signature": "0x664a4b885bca5db36e2b35f4f04ef3e875cb35e723b009610e556110c0bee2ae3aac9f48d2af2d262e83a2084a324e29a2d35d5be0fcd41456cce20e13283bd71c",
    "signer": "0xbe916820AF010608151C80f3A74F7c83218094B2",
    "userId": "881446128"
  }
}