{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x4491f5330cfdc3e05d1610f3e640eda414d36f230868828279bebd48164b1a04",
    "signature": "0x09f5f60a3d1219ebce70ff056fb4397b981a41ac69630b52028d6eedbbe6c68d7cc59ffbe6b0ffee794fd45e060009a0be69fa07b31718f94c646b3a56c8aa2d1b",
    "signer": "0x16536b77201e79535a35790b4d7fCa77cbE129Eb",
    "userId": "474815071"
  }
}