{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x8c8b48d48d970fc12403ed04c5687d327f07897c2f20c31b223de628fa25edc4",
    "signature": "0x09781357bc3c023a6cf1732ea42ca92cf1041a8cd34bfd990f179fcca1a01da2364faa94dd2fb6f0673b6a5647b548d7b45b87ca64ab9c759eefa4f9d4fa31bc1b",
    "signer": "0xaf290d2E9c144182d6eCd4E5c94b73cA11feB1eD",
    "userId": "820138470"
  }
}