{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "4191",
    "entityType": "User",
    "nonce": "0x61a9db75e488adde9c90fdf0843d45d09933a310a0bdb4d7cab341e25ef6603b",
    "signature": "0xce224adf6efffdb23d35fc61bff334436c094da3f1dcfc548f6a5306a3b8c99a638e5882319723c135887386c3cd3c6058adcb9694dd67212e8b50ee9cd4c05b1c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}