{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x4eea29c19ea7f873ca95e6dbd15021ca4c24cfd3b0226f77881ecd3bb573694b",
    "signature": "0x5ab40c2a80e0c5f016b887bf7f9dbaf531e8438118a58253e888207c55d430f1229238680fd534f7f3720b36abcc9674ea8440af83f716ad931deaa77ae677911b",
    "signer": "0x43Ed99d1CFe628329245DdE9b308945A14285Caa",
    "userId": "262721884"
  }
}