{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "392130",
    "entityType": "User",
    "nonce": "0x1991a8a7d061f458970bf9b43975297a411eac4a8058df8d9882e7bbe32c8037",
    "signature": "0x03a93366d34de608a70f696aec3456b63abac12600f3b3c594d3c96606ef9a5d424436ad85efc1747d4f4ab91ee17dd510690efd201a0bba46de065e26e5e0531c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}