{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xa907da5214dfc57bb293188d4dc8c6f795b5487c7ca20e8e3305c4a525950e21",
    "signature": "0x613a3ed295179f57abbbe8a2fa76364a177948f83d15172f6766e13529073a1911d277a4c7b7d3a69306cda81d1df494c059962af43ac962bb3852ffeaf624ab1b",
    "signer": "0x7D91faaC473086cd50a62D9C41986ee901A495aC",
    "userId": "476257626"
  }
}