{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xa9cbf802355482287b09791243df720bf532ba4cdb59db2be0ff62089ffe3c4d",
    "signature": "0x1ef80e6bc6965a2d703750a41e43b60aad4bcd8fdda807738205f4d912f8dc1f56aaca7d9829d0c88fb151227b3c21107cfc0e73025cae9cbbf9150d50eafbdb1c",
    "signer": "0x64888D03Da93901A9ce859716E8D5E9ECCcD9DFe",
    "userId": "169107670"
  }
}