{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "310796",
    "entityType": "User",
    "nonce": "0x44ed69893cb60b5d456005958484d551e17466f24c1a71e65ec16153e11001de",
    "signature": "0x917227a51b31ba12d9fbce2965d8f6cb21bb4fe59ed2d78b9053427d5a83dab35f65cd9969579895afa0247bb459cdc380a2d7ba3c0d1e96d04e9149237ce7901b",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}