{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x3357a58a80ec3dd1c7ea8224cc8c4f5f53d69831cb1036c96ed9b8f5f3658f86",
    "signature": "0xa67a0dbecc5267c71c53226d3f2776b33dc8eedd9a5a32b0b7fa8a5be5fd1703318d565aab19e769c31d3a5510f61a777bce328800dae2397f1fe94e464b12c01b",
    "signer": "0x49ea1963bD0698Ba4421742478714fbFa38E0719",
    "userId": "189995856"
  }
}