{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "21139",
    "entityType": "User",
    "nonce": "0x91d166daf4964e87907b9be26966795439cec0c126448ffeddad6a4e54299a93",
    "signature": "0x7762fe15e703b408fcb9f420c17a10184f6af4a9b9e4436ff5c1bb85450edbf27f59405e72d897c340b8f78cd6424bb38c8c6be41be568800bc2030abb2d2d981c",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}