{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "753516656",
    "entityType": "User",
    "nonce": "0x2f81245e9f2e0b80b9060f904f68e10f86a8689a80b6bb2d8fd73b5e544797fe",
    "signature": "0xc0333caa292a091f45e57de3b2821651a975d139508898eb90ac49c1c29c0eba1bc61643aaca29fb5da0dd3857f36c4899c248082aa548629065140b4497bd7d1b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}