{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "804508659",
    "entityType": "User",
    "nonce": "0xe3a17a2447ab2de6f59348430fa7e840a6cfb35a4de0b1520819dace71a83c72",
    "signature": "0xe30fc196142e32f3e05bd76825263611df309bdb93a6c8dc72ed325c4e080f98302b754616276f1f484d05a6f6cb403c6742a8362434ebb4369e73cd54ef88271c",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}