{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "77551267",
    "entityType": "User",
    "nonce": "0x63ba0b30fe115be43d520d6ae5a3d05248090cf71dedac530d746b188cb76bab",
    "signature": "0x4a6baa74e2147a1ba0f7fb13c2d8d5fef21763db06348f57a9f7f38ecaeb2fd8147e8aae95b2780843a38807e5c0493e23dcd298533489a8e16d6e55f020b3871c",
    "signer": "0xE4c0c73a0c0CD7f65f1bE942f8127c8753aB89D9",
    "userId": "857284925"
  }
}