{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xe81e9562d15fda8cf7446ce3effc9372c1f1dcc2be05ed45a9097f488cb05dff",
    "signature": "0x4506c7a5ebf41b34d6233e7591f49be0e295c3d3c407e983a4714ca55fbe75016b9666ee32b767f47679e965ff600ca2c5b757701e1820875f92f41dc77b0de31c",
    "signer": "0x7BF745Ab0aE164aD1b31611967641E3A638e9E55",
    "userId": "520341854"
  }
}