{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "344861033",
    "entityType": "User",
    "nonce": "0x775b390361a4aceded42b4ce686440349023a99ebbb9aa834e43b65aa4ff24e1",
    "signature": "0x250ed4e4bd1e7b078a0069e05246c6ac8bc3cd2c42a041577dddfb066af5b6ea0e041fbf6b3f84271085cb5e503b3c9e0f620c5d781eaf051b5248f32d3f73c41b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}