{
  "manageEntity": {
    "action": "Save",
    "entityId": "1461700974",
    "entityType": "Track",
    "nonce": "0xe83f19dad73827121a17a701fe7c81119f35888ab1d565d21115366ce5bee76b",
    "signature": "0x9a0f6f782eb5ce4696b7f39c0daaa889dd2df7e0a085cad4220d77d122e61c902c82bbb4309fa62c6ae69f7a93ec38621ef1c33e399da0e019b584ca86531e281c",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}