{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xe0b1b187d5c4028e1c41219c952eea2b0a4657d016d95753b58859739b0b8888",
    "signature": "0xf5a6dad1cb6e374de4b373eea36f4c1ab04e40ab1d0f63112088556137ea5ef45dc1997d230f58ae55052e0f32e24f665e8e9c53d0ec12de4e44bbe19300551c1b",
    "signer": "0xE5379bfbA21050bbFd5a8B9B37aA777B37D585f4",
    "userId": "328634906"
  }
}