{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "101812",
    "entityType": "User",
    "nonce": "0xc19f29f2d762fd639f119a1930f7cdeeb553b5f94b4b1fd02e418aaccbc08120",
    "signature": "0xe8a28b8048031a3b77066d733963c9433fb2ebdbef7e0c2553b2bc17416050ce33d22504c69abd1c94e0e48f33e6d3ff0e87ecca01e10042721d114c442c575d1b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}