{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "335392",
    "entityType": "User",
    "nonce": "0x85d0299dfbb94742124836cddcb663516e56dc76c518e0162e3dde8678ca9a63",
    "signature": "0x2830c553d565c0db9c10766f52602acd2b1f78a683d4a5dd66a0910f25b9781a54e50334ac19d340ce9b216c979bccd48a5fadb613be38fbb07d20d8ea9009d01c",
    "signer": "0x745895918A1926af8a7B4C34Af51BdF98bf5C7C8",
    "userId": "54958731"
  }
}