{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "107321",
    "entityType": "User",
    "nonce": "0x324cb9c372c81755c17bc2ce6d31efc6c25baeb8c0e1dab3531a4b5f7fdbfca1",
    "signature": "0xd4a318f83e81bee34c4995bb0b93362a16f35dbeb8ffdc0df5cc69d6eb07a4284dd7e7b91e2d8c94a63df195614a465fb6275d137d6cc776a048250cf0a738f41b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}