{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "6670",
    "entityType": "User",
    "nonce": "0x4ed4d780b4ee866f5d7578110bf46fcf99d2c31c8625d44ee081f3029a78e89a",
    "signature": "0x2652c0393a6cf40f6dba11d56a8d285ecc2788b6348ac324a446a7957446c3490e1eee40c601492b99e5d48b87c7104aa3a7c423f6d736f6b3123e05e2a297431b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}