{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1881036",
    "entityType": "User",
    "nonce": "0x6f92603f4ed7eb744ffc624e09fe8b7b7c33dc09c0e99111d4225064f8593a1b",
    "signature": "0x4c1c6a40479bff9f409183e04cd26458e1943372ef3c60ca81aea0ee2ad45e7f7fe541b638c61ac2eab28bc486480f8560e17ded418064d0aa621bc4dc48b8881c",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}