{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1518",
    "entityType": "User",
    "nonce": "0x8fb9b55028ecc6a0915c102256721fdba43550245966e81517b2dfc575863a02",
    "signature": "0x58a9f49bd985af8ff9bdb264f60dd93754e36d14ab5cd9c4b129434e9686caf07086d195e0ff27c589c3e6ac0a210299dca7a319c18ae423a078ffce0a25c6631c",
    "signer": "0x84B42609E987DD0953e02498E61987fB833B7C92",
    "userId": "887547386"
  }
}