{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "50737590",
    "entityType": "User",
    "nonce": "0x86a685dcffbadb0f813e21b13df4412115a1e90f4a6a04ddf569e9c8c4bd8491",
    "signature": "0x3f3ee8fb35e2eb222c3e255dc260722cbe0c30e6f3673ce0cba9573750022da4488774ffaafb5dce99f50b872c4da879055b9ba995777a0e37b509018ae4b3631c",
    "signer": "0x5f669126A64334710E37f472BfBfE0D8cF408577",
    "userId": "171892"
  }
}