{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "987974477",
    "entityType": "User",
    "nonce": "0x6577e4c30413fa3f36b8619d21f090f47bc44b790c2dddd0d0f45e170d5278d9",
    "signature": "0xb4a78acab6a9795c05cca410bfe77da1209fc07733fae2e3e1b3d9413b818cf258a440b3a421f368a9f41def63e13d6bbc1443195741c0c91cc6404162d2a34c1b",
    "signer": "0x3Ec98fFA47eF7773803b73964753B99Ae2D50f41",
    "userId": "545926315"
  }
}