{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x9155d80c4da65f67a92a61c658691163ebd514ca0d3c95cc6ce23dcb044efca4",
    "signature": "0xa81f738fb3606ca91620e34d4cfb33681c9d30b8a1d10d5abe9abe2d044053a5638f45ff53475c0b76f24dc28c50323e63b7cdfde264fa86af9bab3ce5183d291b",
    "signer": "0x97fE4381Bd18aeD23a79923d92911F708ab80566",
    "userId": "667916717"
  }
}