{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xe5e2914ed99d0125f732b49ab518afea902c66c4ed3befc2598719a229a6daf9",
    "signature": "0xab30197c6b5e9167196e4556893b36549909cafc17b0e7a1a75d9dcd9e7cbe9f3d547eb8615d6a4712966fb11430380cbc10fcbb01bdd0cbeaf46369f8d0278d1c",
    "signer": "0x2D3840a33922D3Acee3Fa7CE009D11DbE1847C84",
    "userId": "442236242"
  }
}