{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "342990",
    "entityType": "User",
    "nonce": "0xd0379e57e23b3319382e667618abd0d56fae6df7d72c9dd2e45eb21033fc0bfb",
    "signature": "0x2946e0e907a2c7916c305c4d036bd4ccb4e5ca040b0d6e5f359ad73b9dfcf34e4706f81ee031885a062e134d6666894a9c7fe13de250dc164c8571ad7feac76f1c",
    "signer": "0xbbB98413eB671bb0000F0b18A2A7Cae9631043E1",
    "userId": "98311147"
  }
}