{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "4915",
    "entityType": "User",
    "nonce": "0xb5274f9cdfc597f99a23f1449a3b93ce0f7e454cdbf4f60ee2473f389897290d",
    "signature": "0xbde5822ee19b561fb232ba9056ea89c8728129f7cf84b531aa837af57431812343f7401b7f770ef3448a59338334a5596a1e5f8163060095f8693b518fe6450b1c",
    "signer": "0x243f92B83d056f818b9b95664A8B7A86805A3E71",
    "userId": "111448"
  }
}