{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "101990",
    "entityType": "User",
    "nonce": "0x3d4f9565887faa71b3e63b69365a6889dd87a069de0d0a184fc15d5add9da46a",
    "signature": "0x6e5f2eabbbbbf361a8b16e6abcbe48ab9ece88c3df6db577d6a8bd47a2db336f659ffa3ce28c1aa157fcfae3d52b482c4f52ed35b4405608d25d7b0e7ead32b21c",
    "signer": "0x2Df83D15c880275a0138820cE2009Fc85eF32C65",
    "userId": "107618708"
  }
}