{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x43e4f109ab455af256cfa9b334167f4ee1e1943a6d3afdd0e9d03e79c8cf50a5",
    "signature": "0xcb9dbc87cf7278ffae3d9bfaae2862e8bc5d95d335a58f38edce2a5bb534c2ec451240b910fefd890a032a646940c01b191e1e4a0dca899e50eb3b2db55904be1b",
    "signer": "0xc3aA6C198bd0A10Bc503827Ae471c2Ab6fE364A6",
    "userId": "770643329"
  }
}