{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "752472957",
    "entityType": "User",
    "nonce": "0xeb70d22f72f8c98598464080f4a724cfef667b1db77c3ccd1dcbd69511822bfe",
    "signature": "0x40cf16a24367798dbe7977e1370afcc106798fc53de3254992cc1080ab039ab0561dfce494beff6e2ec5fbad6664e0ed3694348fb8d14c3572c2d86fae1511171b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}