{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "728570067",
    "entityType": "User",
    "nonce": "0xa246bd89753d2b910452e1ccfcb9a74d46b06a4468bacfadb7c4208283d85843",
    "signature": "0x73603c34794b2e5e8e314e11259255f809f4f64430dbe0f1c2475b633d303f815a588bd2d40ef266a03d4bffcdfec6ee6f32e1cf2d25845da8ee03259828939f1b",
    "signer": "0xfa1f98f0530E55C2BEFA45f0F1B3A699b4559136",
    "userId": "149566028"
  }
}