{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xa8e67339cb857f26922bfa10f84c8fe98d2416a1781b82990b2e35afbc12e252",
    "signature": "0x3426738d2e1e0ed28866429244c22433cd309eeede7ae79456414db975a4e252286cccba2d0d1fa553218807de4a3a248bec9ced31f84a3532436f2e345b6a741c",
    "signer": "0xCb1BcaFe7A277A76A4107A9a651d87FEce2487Dd",
    "userId": "589700518"
  }
}