{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "525853819",
    "entityType": "User",
    "nonce": "0x39377bcf649e8f74ab55c9d4413de8a2e035a0717c202c576945e63dbd4c7d0e",
    "signature": "0x7707fd1a8324684161b746b6d6a331f82946aea74d27a987864b5d1ee0d5cadc691ee84466078573f86075cfd9d5aebdb1dbe62d0a1d7515e623c9366a8626151c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}