{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "617072743",
    "entityType": "User",
    "nonce": "0xe449b5dd84a2bc859735b9c82c517544cfb4df6e69cf041674043bb095f92272",
    "signature": "0xc6ea01a267af828d98c13da6ec1d5529810c66cfd0bd8f0794dafe5af0ad428c321debcf23bba4b14aaaa2d748bd8e803322bd9f25cfbdcede4d687a229d21991b",
    "signer": "0x7cb443E1D882339Ce2Db89944ef44929E8E2F578",
    "userId": "343301"
  }
}