{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xd6900eb583e686a1c7ea7859281ba204914a2c94e8592afb9ebf19342d4412bc",
    "signature": "0xbfbc3e15b2fc159c70ca0c1a77a7536681da49cdc2f20cf97d68d3449fc3a9c60df8c9e2bce30487dd6720c427ad05a6459ef94cbac2c0a7d74fd26df84a79fd1c",
    "signer": "0x7f83DC65E233094CeC983FBe41A087B9780d2012",
    "userId": "285099397"
  }
}