{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "102873",
    "entityType": "User",
    "nonce": "0xb3b6720fb7f6ced82657888cecd9533f058df7ab94315c5bdca453ee6fd8d01e",
    "signature": "0x5d3fbcc243689a4b3ca61ef599938a96d93ff455160a73737a2b6241b02519d86877d6ecd65a77f28a11e4c6ea8b9a965c4366c798ef87876285867b3e1c10501c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}