{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "377124815",
    "entityType": "User",
    "nonce": "0x11ac0779bb69343bfa4fd23eba481b572c1076cdc877f7c2c7fce313a4bb5819",
    "signature": "0x5076b570680f6f9e6844fb980d7802ca88cd6fb85c9b57aa09c5444e1b2e8f132adb5d389c646a4093833e344e5be8f6b4f49b0c8f379f3937e30ea3947092791c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}