{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "3257",
    "entityType": "User",
    "nonce": "0xb38bd8cea087dd90d668a7bbfabe2b792ef67806e030eac44a0f7d646804661f",
    "signature": "0xaff77daee8c606a3f832d02087553c8c288d527b1a74a52988e5310ef514205b5efb5f28a9ad6baf6333abc390daebce09c5ed6ea8387b1e390980cb94abb7ff1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}