{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "301606",
    "entityType": "User",
    "nonce": "0x160bcf7a2cc7c951c36a708806e19a055b2f8e2eb9811656d29d67efdc554245",
    "signature": "0x69a5545403e2c17fca8f42cd7238e4bec0467dcb5bdfba79610c5d4d77a6fe40490aecf90f3c7bcc18b7beb76206e31786b1e1c4bee92ac728a76febafce74081c",
    "signer": "0x204E506f1D5498d2CABD41d2fc7a3078d5792835",
    "userId": "768479471"
  }
}