{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "394450",
    "entityType": "User",
    "nonce": "0xd8290e63af51480be976c132a143b469fae402b965fec3cb785d03ded8ca35b6",
    "signature": "0xe90af645b0ab9759b4150499eac101f03869aa8b07ff3a29109fa6c06b6e1a3f0d135c90b5d4cbb578bd5055a80698509425c03b52b1c3a3a43ed5e5bbdfb80e1c",
    "signer": "0x3CEbf9bfE1b24355cBC348701860d601E226Dfbb",
    "userId": "172240066"
  }
}