{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "50530",
    "entityType": "User",
    "nonce": "0x776bbbb40ce33a2c052bc61b5c8e5c7460b90a90d6bbed7efd3fb5d00c742ac0",
    "signature": "0x403b6e8099bb42808b5ebbe0d5937773091e272f220b294cb82e984bfb7be412421cf951f31527ec7f78e66fed8dde2bb55528dcb243009f35a8c771730fc6781c",
    "signer": "0x222534475146193b99B68F2E3830ED2b44307C2D",
    "userId": "991417453"
  }
}