{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "273050200",
    "entityType": "User",
    "nonce": "0x6f530f5599fd960e3db2950add1cd8d05ff10f82d383e3186f358c1690f2c02a",
    "signature": "0x1ff2dd226e776e5a3cbe7cb501e34ebd23c9964ae183b11df4b05a725adb85785126741bdee78346ef77a153bfb8833b5eb8c8565f64b4e487cacb7839d47bc11c",
    "signer": "0x0E71C12c426F5C9206F778713f48B60477CA943b",
    "userId": "29088079"
  }
}