{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "647391197",
    "entityType": "User",
    "nonce": "0xa6d45c3eae25cecf2a25d079bd9bf5cbfd41316eea68e1e803947de0da8872c1",
    "signature": "0xacaaab6992724a7276e0940a26863196de094da9315f23313b2f914ace937ada61153b93e2d1c1ae97c7663575dd6d4cda9a72e0ee72e10230e31663c75c17ee1c",
    "signer": "0x94d1769762bc3a1e7DCd3e8a31C89Ff199833Da6",
    "userId": "715573876"
  }
}