{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xc2f88f1e2d5257b9f60b1a88b9a232fe19303ac17ecf89f173f242f59a2878c7",
    "signature": "0xe5ec75e77d4e03f837e64d69ec6a4d747ab15a6b397b906a4baddcb856ca5686584a5ac51a008c1f36d6a051a428effa465723b75d2aae45f1c608505c08fe071c",
    "signer": "0x328e60fb4A4DdEA242A80A57Dc2Fc1dD6C596a3e",
    "userId": "941476181"
  }
}