{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1867438",
    "entityType": "User",
    "nonce": "0x8d0bf5cf743d211c475cc8e0917c9dc6408a3be54dd913961505b8b8714613a1",
    "signature": "0x858f45ad52abf7cca3e89615bff8db40d9deacb0eafa4bb4cdfd854ffc1b86cf788c6f4aa3f7732acd89d702aac21dfd387b1ab12e62e9e6d965343053e341f11b",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}