{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xb2811485954a664fb800160dc8d9e285c8a3996712ec2de33211da40ee9940f7",
    "signature": "0xa3ec74b44d2c5d38ade90aa84ddff3c00acb7c5802171753b0a89e162d011f0b059a1d1eb30658ec4e20646e5df8e5d23390e382cab37d9b173931c88bd306111b",
    "signer": "0xA565ED110cE2dA98A5F2A2a55687BB200F727CB9",
    "userId": "573903475"
  }
}