{
  "manageEntity": {
    "action": "Save",
    "entityId": "1412281134",
    "entityType": "Track",
    "nonce": "0xa6e52c26e525d5daf47f5f7f1949523df4873a3b597c0b655e3896a6048212bf",
    "signature": "0x4c6594b6b03676f2f9b5eed9511b3c9d3f5017360055d9f806b50d3fe34e9fc00c4ea5176514b1201bc87caa886645faffca0e3ad6c175a3a5d5d064d53fc50d1c",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}