{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "721016",
    "entityType": "User",
    "nonce": "0x45fbced02f81c881af4e2ac31e56e1488496626a152c616c148a2e8c095a556d",
    "signature": "0xf3bacb73612026198ab2b7a8660541b0841c18ebfd74390b1b27d7314ba77d626f21dcb7aed0a2c8d398d100bc5822b0544a6e6e8df23cbefd0843061dde8bd71c",
    "signer": "0x14fa63A530B7d9254d20B110AAc25ABF49fbfa9d",
    "userId": "182428"
  }
}