{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "354640",
    "entityType": "User",
    "nonce": "0xda2344f8531a18ec5c5974b4dee096862a8c4b9e43bd321103cb93c7b3b72d1b",
    "signature": "0x51850e152b67ec647fe2d5be4a390884b2b8d15720fff6411255e834182045c052013e00b1a4c01f18dbfa33f53a2677b8483eb442c7bc8aea834f4193f2909c1c",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}