{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1881246",
    "entityType": "User",
    "nonce": "0x018b22a641af38fadc7085efd95a782b76300e06aceea21e5468f20820523124",
    "signature": "0xf9feae36c93c36b01deea80538c58ddf104b543597da4132b11fb7221120daa740b42bc6ce6f8453ef699695c3f7cbec0d7f8158d17b868306febf48ff89b9f11c",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}