{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "5467",
    "entityType": "User",
    "nonce": "0x323e2d33f5fb91fa3f34c91d7019561dad93416e8390442432d2472819ba6970",
    "signature": "0x3d6c6958e893ec6fd86c60e3c087a29b762ee71c1641cd9e69373005b3fd472031ad7b3dc779a4145885a7b537be8675130bd78c1ba63b50169d5f50b4d725491c",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}