{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1686877",
    "entityType": "User",
    "nonce": "0xc9557c055f5510bc68645351b24958bbf93b627a85b4b5388fce9474ea098d4e",
    "signature": "0xb1f64d96719476c3bdf88c2de67dada412c695be8a275536fe4c69c59ac2c8520ae803be322ffe61a663e58b722f309efc6f5e580d1d45d883275dcaef93d3621c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}