{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xed36f0de3fa492ec4099fdc2ff81fb486877750fb72a626fd2c59fbac294ce1e",
    "signature": "0x4ddaf34452f6d86a37310bc3240a9b0ebf37a210e8ba91763c3dbb67377ca93546480ff08d25b938c674f2fb24141a77095ff339675dae9c54cf6d9cd77647081c",
    "signer": "0x8838cB510ADd37b71093e4FD76B81bdd280860f8",
    "userId": "674339889"
  }
}