{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "887242445",
    "entityType": "User",
    "nonce": "0x8251914f074e121a7156996f7fc919dd132b65ab97c376ad3eb0f3650680a577",
    "signature": "0x1131810cda4724a5e09ff1b1ae3205122aa2a56e5a4fd6fe19033fdf68994f611dc3e5ab62cbca864a359139e1a968286b43c2717ba81857ca6a808d33b03c3f1c",
    "signer": "0x7b52e6AA15Db4Fc3A84AFF2b12e5B8B128eA8610",
    "userId": "808512351"
  }
}