{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "67615010",
    "entityType": "User",
    "nonce": "0x1f3fe2fc4a073288e4586057a2f5772621251b4a4e0db5e5d04f435fcfd7cb20",
    "signature": "0x393a7ead772a5fc6c5948a67349674f83d85cbd26fd782b3b89ecba15499605d35580ddb8c2fb5e4ef3858bbfe7daeeb2dab5adee788d556b1c19cc75277e22f1b",
    "signer": "0x9149C438b2FBf68d0e846EEfE2E6B19be686Af42",
    "userId": "843"
  }
}