{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1881214",
    "entityType": "User",
    "nonce": "0x10131c2e93d9daa8771d117741f69cd2285a03ffcbcab1996c35938d0f8f52ec",
    "signature": "0x0601fb8ceb3edf0b291b3197bfe74d1dcf4a027d63dd4fcb58f9079f65a0f26f486fe60eae19e03478efda3075c0ac3a6aa8e668d5f17d753d51e14fc69b247a1b",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}