{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "11399",
    "entityType": "User",
    "nonce": "0xf9e6cc41fd4432079568ae6cb03420e91c9696185f13e82e4d5961d7d993d1ec",
    "signature": "0x8d41febfb82ff07b1aa824ecb09e1a0001ef5667cef42e3afbcb059d5f3642875b9e0125a879ab2fc46ca136ae42fa5f4258c54ae865a1edc7caa2eee495ec381c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}