{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "381571423",
    "entityType": "User",
    "nonce": "0xec0372b9be28e3979b4efec20d4540acd6b3cffa06602cdd839daaf552945057",
    "signature": "0x501298c58cb46fc6245d49cf4969be9dd0c14e7889b4ed4d60cc3e15f8880eb02f71f618a92bbd999b0156b019630130dd20bf5a0c628e351d9e45cf53f5cb291b",
    "signer": "0x0319D614D59F18154d648c7A48469504C3690FdE",
    "userId": "852879658"
  }
}