{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "16962",
    "entityType": "User",
    "nonce": "0xd25c4d46dfe7289275db23c53c7db15f06f512ec276e5337426f343678f028ce",
    "signature": "0xb2e978ce8559b1cbf04fcf8e9b06d23bdbced5671ccfa4255c8617cccc8e58300ffeeb1fd142e4bbf726d5b77766b903bf6c4c2713ed7f1fdcc8e827237571281c",
    "signer": "0x569a23a5D506E4404139fB7510738Ee5b80F5624",
    "userId": "280440301"
  }
}