{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "642876820",
    "entityType": "User",
    "nonce": "0xadef3ed08244e863f9291021416760d7ecc55e5fbdd1cf039e44cfa3c11d4690",
    "signature": "0x40aed5e39e36a2544ddbb15b455573bc175d742cb2168bbd36c31b97be283f8d0138a3c73b895ddea1f62d395e82ccd185df2676b9a2a9e03bfde77df9ffa0281b",
    "signer": "0xeD4de8C7aEdcca7a62a5E17Fb9DF5ee4991E5b73",
    "userId": "209405413"
  }
}