{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x0dd5b37e8e4eed4a53ee43e02c6e3602847b2631f9ab9a533dcb47e34d3d553b",
    "signature": "0xa8f074e4f5684d625f8eccee23ccf62376dc4ce775535f29e68a58d277493d4f1174e54980486dc53358f013827616e44fbd0a5c28219afc5c9f684965ac4dd71b",
    "signer": "0x19A238e61AbE5c45D7094Af8369ECFa569F3a310",
    "userId": "169773612"
  }
}