{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "464100900",
    "entityType": "User",
    "nonce": "0x07acedb0253cf4e8c484185c944c4a5e124e62ff3db658f401d7bdb77f7560f2",
    "signature": "0x2d645aeb9fc9295e5728c95d3a6593d5e29718df0eb60059512898aa889d16e85253d7bbcdda7aedd4644624650bc0be6ac1fe7d06ee9db8e0024616994e15551c",
    "signer": "0x44Fe9338D9d1405927C73FDA0be0F36ae481Cd39",
    "userId": "983568397"
  }
}