{
  "manageEntity": {
    "action": "Save",
    "entityId": "31651861",
    "entityType": "Track",
    "nonce": "0x53b159ce6e2bee08f6eeeab47eb69cfe84a219b53194dbdb3b80eebcf7b7f6b7",
    "signature": "0x30fb881b1c17ba9575422819a0748b2497b600f0bfade9be7c226526e39e26c930a8c8f03d82539a7871da9a03a48ad74c99f59cf51aad23e838b0b25c84324b1c",
    "signer": "0xBe0B2B2beC4B0A46ff11169512DF7f66E775c0B3",
    "userId": "196632465"
  }
}