{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x6a54e150ec8214522fcf206744581deab145b7796baf6da91d75713e09b5ecb3",
    "signature": "0xb46509dce4be1cc53527e2e6a90c89960a441bba107638c619dc6df34c6e3b0207685aaaca3d3a7110ff4bcac56b33568d000ef5c1c672c97fa4d40b781312871b",
    "signer": "0x4446842c94cF74912474478Af728556d54F4512C",
    "userId": "103107825"
  }
}