{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "887547386",
    "entityType": "User",
    "nonce": "0xa4f608b87eff1ffac473f8bd2b0934793ad86f670be3891447877909220998b4",
    "signature": "0xe0b93a31e0826d1177d361051135f24e5427ceeec446aa26fd04bba4aac8312752463e9a0d8326be6dde2165bae6e5a7815a23d7dfef051a1de69a9359c2c1d71c",
    "signer": "0x80039Db0B0400D2699a0A8A5CC63821682080654",
    "userId": "580920017"
  }
}