{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x53e5dc4540fcd819903d34c0960d51a38431ea6adb74663db1265e4ed525a7d4",
    "signature": "0x403d36170f68f5e873451b405e515bad614596a1583cdb4f10a410c62d0fbed72e2e6f095fdb232b9ee3ffffb21ea476c9a5bde78189b8f64c44f6244c2bb0471c",
    "signer": "0xC22F133187823f83f32A7ECd149574160C9619C6",
    "userId": "251000392"
  }
}