{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "301753",
    "entityType": "User",
    "nonce": "0x93a78c9ed48f90b2dbfba251b3b5dfb28abc984b7c18db7e25d447d55ec0fa11",
    "signature": "0xf1737ba440e965b8ab60fcf66dc5c9279a5370f887c072263ade0b535525071d3e2248693cb4dea360953bdfbea13892614f70b12ddbe972071315edacc3c9691b",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}