{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xd2973e99722cc8462dcd41833ea7fd1cde1c653d059f9b5622c7f6a141e9ef2a",
    "signature": "0x71405ca94703007973650868021b97d0e2414b467f9dcac818f9ca96e13c0765308028f39214e7c9db72e4edc055a2a90209547a50d34f11d65fbcee60c234ac1b",
    "signer": "0x75387BeED3d3B040a54C3e303fF0B07Da67a9186",
    "userId": "223536026"
  }
}