{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1655698",
    "entityType": "User",
    "nonce": "0x3f3e32d9976296911d70588d1f6e7438e45590ea7a37410c1d1a1b611880e96f",
    "signature": "0x65c023774c7339f2f00b5a588558f2e29f1e07ab4e50c5aa7384c0bf455ad44643729366114c829168de2e3d24fef22f775f58118f535e415b45789b2e49941b1c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}