{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "597549690",
    "entityType": "User",
    "nonce": "0x72e05c1184b39bfcc8ac9a0085073fcee422797a7150c2674b1649699d2d90e1",
    "signature": "0x2eee98a3a6bfa3f2d2aff25b75eda24e43ce6a7ee61a77cda9a31e27411d80d75730a74da37057135a1c0eeb4184ee47d150a8a50822c1a2cee692827c66b7d61b",
    "signer": "0x2BD0c2111290EB20B2843e8b1c0f25aA5cd52a6f",
    "userId": "618242981"
  }
}