{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "16128",
    "entityType": "User",
    "nonce": "0x1afe8f583855557a68efc1f281d818a17f5d0ed212229768662fed71d808a89a",
    "signature": "0xc839fc066e55aa6fc145c14beb547ea03f360dd27ae97c55ece1d5e62b168a860d83fcfc8d88e856167e4230745a30a1862f312a0da0bbbf33d4162fabdc404b1b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}