{
  "manageEntity": {
    "action": "Save",
    "entityId": "944016447",
    "entityType": "Track",
    "nonce": "0xad6408ced52ab134ee87fb6e39135a946582cb1f597eab6c5e56e43e77c3af17",
    "signature": "0x270a251008cf1a02cfd85e5ea365fce769608a8bfa18433b34409cceaa9b518312bba7a15be504e4d81f1d55d25592ce6e91ce110a93aa991502e88f719054901b",
    "signer": "0x7eBAab495a64FAea1f04dc59ff804bf939da7B12",
    "userId": "709077025"
  }
}