{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "216497",
    "entityType": "User",
    "nonce": "0xe69de72c68f72004a87239b6eef1ba0f02e7fbc498d925e4270e19bb2b2f8159",
    "signature": "0xbae77162ba8d480db9da08b2868f92675191629fca0d1b688e1348d414e22af2763547912598e4548eaa36f8252ab9d5550b83f27edc9611770701463be7f06e1c",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}