{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xe128a7c0de977027e6a6530329bbade1abe1486bf25bfdcafb2834d970e3b8d0",
    "signature": "0x16e022acea7539953a83e4c6a4a3c4381f8c60a9db41c1d41a353e3d8bd3bcad15e145a145dab4e9f2280d9957772b0e211259a288003c5a980a4d452ce734991b",
    "signer": "0x743D80D1b44492C339EA085e60300F7634dFB472",
    "userId": "305157132"
  }
}