{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xf5c366c65c81dfe053c57eeaf3e4fceae3ec5b256ad356ab54c7276ba03bfaff",
    "signature": "0x5ddde01d5d21f3871495e3017f70cdaf6cd12835773433202907d9b8cfc1ef750b33088d6339a59a301aae2ae7e45ddd5abdaf4bfb206099b4deb92d45c4b8a81b",
    "signer": "0x4a6aD7655A778B68A120F68E69f6099b8BB6451F",
    "userId": "721428438"
  }
}