{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x12a5566795f9aa6d6a892487778e29b1444786c7dcb52c0c0f421217fa102ca2",
    "signature": "0x0d6e13d80bc86a7719b4422143cd68685e06c0c7596d6cabe6e1c779adaa26435eb67bd45927bb9890517d297cee9efbb426774b0eb69e1f387c648bffe4a37e1c",
    "signer": "0xD818F9287F6E2f2d8a05412725b6ed4edB9FD137",
    "userId": "342609084"
  }
}