{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xe0fc1682db6bbc83f18f2ba1a2a400f64beaafdf7df2da9cf687aa584a0edaac",
    "signature": "0x3db31663b97cf5c86f1f5ea4183ad7393b9598e467b6cd1b34a483c2fb3d2e307be34622d024634757e3932835c2ff8ef2cd1b69d78ca0cca2ef4832f69a735c1c",
    "signer": "0xe81C5B1ADbd4C603a5fF628Eb679619895D196a9",
    "userId": "98953741"
  }
}