{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1839601",
    "entityType": "User",
    "nonce": "0x287f11e1c0473420fe66c93eac4c78816290cdafbb838e15a37ee56180cdf971",
    "signature": "0xf6628aab6a93ed2a17f95f6ff05d937a6280895308e7a65afa0ad90636effa3a5a64a4f94a5a416a97df08de2ba2289f36351f6da0c7aa54ba4293ffd2eb3fcf1b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}