{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "139",
    "entityType": "User",
    "nonce": "0x66c2ab1e3385923e815f9f6d5423f5ab6688725e7ce0915bb45824efe107b04b",
    "signature": "0x39fa09b61f6f3a581649261d3cb2378b622b6ed83eac5ec1d0b059c810d42cac39c3a8640c7cdbad3d274380db649e611b0da850f0cdf357be30263699d894c11c",
    "signer": "0x222534475146193b99B68F2E3830ED2b44307C2D",
    "userId": "991417453"
  }
}