{
  "manageEntity": {
    "action": "Save",
    "entityId": "1626158264",
    "entityType": "Track",
    "nonce": "0xc30b940d7f7f574f79b3805e26e2f2d773f531f7c0eb6ff1e59360cd1dfe5406",
    "signature": "0x6db47640221563ea4ac1751a0e3b681448bcb6e0b6723bd789ceffe6d0bf6b432db5f3fece5f19c0009d659af2ee42c56d06b4f77ee38691700f76b6bed8c42a1c",
    "signer": "0x77eeD8eafACd826a3ea00E1443bFaE2a8db87fEa",
    "userId": "205392"
  }
}