{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x0502586ee83aac79195c9cff02acab5895e07d0fd4f2a1ae1234aef9f968e2c0",
    "signature": "0xdf6fa80eb2d2233b55b900c72607a1739cb0f51c0dfb0171f2cc217c69c7e9ee6944a01fe56f35b0d890c9b303d2b621b417ffc5dba1dc65c264800738ce027b1c",
    "signer": "0x50Ca70bd63cC1E9F405Eaf4486453cD8A262a068",
    "userId": "395085072"
  }
}