{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x186e717f24e816894ee87f898cf96105e9616e5654569665e2d63d75a5d69dbb",
    "signature": "0xd82b1cdb2f154021b10af47c8bceb80f443bca00a21401e4fda9c71e6f9ae42421933d40a483c9912c538df2513149e33b123267725c092674397d0348b372301c",
    "signer": "0xa568c4C22e835d09d80B7708D0032E8D4d0a6671",
    "userId": "442242328"
  }
}