{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x858fbc5d274de6a67f0d6f8dd25d48f348224db29b1b06149258af86d5ae5a59",
    "signature": "0x464721ffb7b54fb5f6273460a0d4900804c0bed6a12d54366334596c352efcb23b53bdf0e4616e60a192470c21eecf233c9a3274a8baf1c46c08f1578bc856231c",
    "signer": "0x188F517A3022bBC12ac535654eE4503aCB41D658",
    "userId": "32192450"
  }
}