{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "12558",
    "entityType": "User",
    "nonce": "0xe1200f3c9d7e2b7993200878cb68e95343ff2d10e820d3f6e7718805444e5da4",
    "signature": "0x61c60e600c1d71ee78e8325e06fec3d8a075fbd3719ca83c6e4ec406073af2576104b533f4842f1be956596934658ae749bf4512e1f23ab6ad4c847f759e58451c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}