{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xa889b54952e454fdd5d64bc7e0cb4a210790f9f5a5cc749124e181bbac8c94c6",
    "signature": "0x8c6e6f2e339aa536a2e9439613b3be8f421655c3896f1a60c69c592bd17100044419e6ef5064711a5e305662cfbef20228a48c446e9827f812a77b00a11e87d01b",
    "signer": "0xA27B00F57fC7B3E81c4d7C4919aCec97E1fCf667",
    "userId": "329513359"
  }
}