{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x4c48bdbea388ac72d8df28a21efabee4cac48cc2cc09e10c6857570be2b48d58",
    "signature": "0x39bf088a2d5f93cf96feaeafa7a980248d710ac1c4188f9f8c55e401a8760f1a62de4da0ab347f8ca92bb55eefbf5246b0aa645c601de0d4168b837020a51c641c",
    "signer": "0xde61DFc41A3AE529E5330bB7122Ed2D36b8c7d64",
    "userId": "875944958"
  }
}