{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "12615893",
    "entityType": "User",
    "nonce": "0x8f4222657625e6275dbdd7f4180492d840977a63414876ab4670dff1bfe900ff",
    "signature": "0xb6a24db4dc6c6453ced2e7d8d0b6d99fa9f5050620406a01edf0f58f7c08efa57e6baa12e0ef7e9bbc0d88ec4f3b3e5e78c8ff0d472e2985443f3de1f974076a1c",
    "signer": "0xe182A995F47bd422F33Fc9D166eEe6E025460067",
    "userId": "52964"
  }
}