{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x3669891498c24eb391d97f14e9b995b7ed4d12e9158ad6c19bb66289e8c27806",
    "signature": "0x30819eb1e49d33e4ab5aba5d05dfb19001e42c4570509a047d4abe742da7b63f160ffe18b8efd0a001abcbb36cc2fcdfc55bb81f619f4853d5ce428cc68e3ec71b",
    "signer": "0x2eA69295eDcdC9f8941Fa95AD49DD39D3840F43b",
    "userId": "849918044"
  }
}