{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "190321",
    "entityType": "User",
    "nonce": "0x541d196e087bdd611a918b06201fce762fd434964b3c181315ea983a849ab6ae",
    "signature": "0x156b40bd519892e0e014e4c6df8cdad02b723fd5c94fd6436cec773f30cfdcbd4252c400907b14ab7cb04d527ccad0347763eb13ddb4a39af72847e60ff761271c",
    "signer": "0x41b85819b94cd5b7fECa7e7BF3613e0aEa1CD2B8",
    "userId": "190643626"
  }
}